VF4 is a standard engine. VF4D is a "Heavy Duty"engine, as designated when manufactured, andhas Stellite valves, and hardened valve seats.The "D" version is better for todays unleaded gasWisconsins are notorious for valves gettingstuck if they've been sitting around. Beforepurchase, pull the plugs, shine a flashlightdown the plug holes, and make sure you can seethe valves opening and closeing when turning the engine over.Get a Wisconsinowners and parts manual.there are a hundred listed on e-bay,search under "Wisconsin Engine Parts". The manual says to pullplugs and squirt oil down valve stems, beforestoreing. If your engine has a magneto, parts,bymagneto model number, are redily available fromThis, Y/T website, or "Branson Magneto", at www.branson enterprises.com. Carb kits and gasketsare available from NAPA auto parts. Wisconsinmotors are still in business, making engines, andparts are still available from them, through thedistributors, but priced as if they are gold.

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